A rectangular reinforced concrete beam has a width of 300 mm and an effective depth of 400 mm. Concrete strength is f’c = 28 MPa and steel yield strength is fy = 280 MPa. a. What is the distance of the neutral axis from the top of the beam so that the strain in the concrete 0.003 will be attained at the same time with the yield strain of steel? b. What is the total compressive force on concrete? c. What is the balanced steel ratio?
A rectangular reinforced concrete beam has a width of 300 mm and an effective depth of 400 mm. Concrete strength is f’c = 28 MPa and steel yield strength is fy = 280 MPa. a. What is the distance of the neutral axis from the top of the beam so that the strain in the concrete 0.003 will be attained at the same time with the yield strain of steel? b. What is the total compressive force on concrete? c. What is the balanced steel ratio?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A rectangular reinforced concrete beam has a width of 300 mm and an effective depth of 400 mm. Concrete strength is f’c = 28 MPa and steel yield strength is fy = 280 MPa.
a. What is the distance of the neutral axis from the top of the beam so that the strain in
the concrete 0.003 will be attained at the same time with the yield strain of steel?
b. What is the total compressive force on concrete?
c. What is the balanced steel ratio?
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